Type-form and printiito-rtjle therefor



C. CHRIST.

TYPE FORM AND PRINTING RULE THEREFOR.

1,320,738, Patented NOVA, 1919.

5| nuento c CHARLES CHRIST, 0F LYNDHURST, NEW JERSEY.

TYPE-FORM AND PRINTING-RULE THEREFOR.

eeogrss.

Specification of Letters Patent.

Patented Nov. 4, 1919.

Original application filed Aug'iist' 24, 1918, Serial No. 251,226.Divided and' this application filed. October 24, 1918. Serial Nd.259,529.

To all whom it may concern:

Be it known that I, CHARLES CHRIST, a citizen of the United States ofAmerica, residing at 335 Stuyvesant avenue, Lyndhurst, county of Bergen,and State of New Jersey, have invented knew and useful Improvements inType-Forms and Printing-Rules Therefor, of which the following is aspecification.

My invention relates to type forms and printing rules therefor and is adivision of my copending application, Serial No. 251,226, filed Augustthe 24th, 1918.

An object of my invention is the provision of a method of preparing typeforms whereby the printing rule is looked against longitudinal as wellas vertical movement on the type form. I

I will describe one method and twoforms of printing rules all embodyingmy invention, and will then point out the novel features thereof inclaims.

In the accompanying drawings, Figure 1 is a fragmentary view showing inperspective one form of printing rule embodying my invent-ion.

Fig. 2 is a fragmentary view showing in perspective one form of typeform having applied thereto the printing rule shown in Fig. 1 before thetype form is planed down.

Fig. 3 is a view similar to Fig. 2 showing the type form planed down andthe printing rule in locked position.

Fig. 4: is a fragmentary perspective view of a modified form of printingrule embodying my invention.

Similar reference characters refer to similar parts in each of theseveral views.

Referring to the drawings, and particularly to Fig. 1, A designates aprinting rule formed from a single length of any suitable material andwhich comprises a fiat bottom wall 10, side walls 11 which are flat fora portion of their width and then merge into longitudinal extendinggrooves 12. The upper edges 12 of the grooves 12 overhang the loweredges, as clearly shown in Fig. 1. In the present instance I have showna printing rule for printing a single line and the top of the printingrule is necessarily formed with a single printing edge 14, however, itis to be understood that I am not restricted to this particular form ofprinting which as here shown comprises a plurality of slugs S formedwith complementary projections P spaced apart by channels C. Eachchannel C extends transversely of the slug and the slugs are adapted tobe arranged so that all of the channels are alined to receive a printingrule.

On assembling the printing rule A and type form F, the verticaldimensions of the rule are such that when in the position shown in Fig.2the upper edges of the projections P abut the overhanging edges 12 whilethe bottom wall 10 is spaced from the bottom wall of the channel G topermit further downward movement of the rule.

When it is desired to lock the rule A on the type form F, the usualplaning down operation is begun by placing the planer on the type formand then hammering it down. During this operation the overhanging edges12* are forced downwardly into engagement with the projections P whichcauses the upper edges of the projections to move toward each other andinto their respective grooves 12, forming a longitudinally disposedridge which interlocks with the groove and thus securely locks the rulewithin the channel.

The manner in which the projections P are bent to lock the printing rulewithin the channel 0 is clearly shown in Fig. 3 of the drawings, and itis to be noted that because of the frictional contact between the wallsof the grooves and the projections P, longitudinal movement of theprinting rule within the channel is prevented.

From the foregoing description, it will be manifest that I have provideda printing rule which is so constructed that it automatically locksitself within a type form while the form is being planed down and thatthe locking means is effective to prevent longitudinal as well asvertical movement of the printing rule on the type form.

Referring now to Fig. 4, I have here shown a modified form of printingrule which is generally indicated at A. This printing rule A isidentical to the rule A with the exception that the side Walls 11 arefluted or corrugated vertically to provide ribs 15. The purpose of theribs 15 is to provide an additional means for locking the printing ruleagainst longitudinal movement within the channel C of a type form F. Itwill be obvious that when the printing rule A is placed downwardly intothe channel C, the ribs 15 bite into the confronting sides of theprojections. P and thus lock the printing rule against longitudinalmovement. This locking action is augmented by virtue of the tendency ofthe projections P to bend inwardly under the action of the overhangingedges 12 which causes those portions of the projections P adjacent thegrooves 12 to move between the ribs 15.

Although I have herein shown and described only one method of preparingtype forms and two forms of printing rules, it is to be understood thatvarious changes and modifications may be made herein with: out departingfrom the spirit of the invention, and the spirit and scope of theappended claims.

What I claim is:

1. The herein described method of preparino type forms, which consistsin assembling slugs and prepared ruling members; across the slugs andplaning the ruling members for forcing portions of the metal Copies ofthis patent may be obtained for five cents each, by addressing theCommissioner of Patents.

of the slugs into the ruling members for anchoring the members to theslugs.

2. A metal printing rule for type forms, having grooves therein normallyadapted to receive portions of the slugs, and to bend such portions uponapplication of a planing force directly to the printing rule to anchorthe rule to the slugs.

3. A metal printing rule for type forms, having longitudinally extendinggrooves formed in the sides thereof in such manner that the upper edgesof the grooves overhang the lower edges to engage and bend portions ofthe type forms into locking engagement therewith during the planingoperation.

4. In combination, a slug having spaced vertical projections thereon,and a printing rule having means formed on the opposite sides thereoffor causing said projections to automatically bend and grip theprintingrule when the latter is laned down, whereby said rule is anchored tosaid slug.

5; In combination, a slug having spaced vertical projections thereon,and a printing rule having means for forcing said pr0- jections towardeach other to grip the rule when the rule is planed down for anchoringthe rule to the slug.

In testimony whereof I have signed my name to this specification.

CHARLES CHRIST.

Washington, D. G.

